Question

which one of these is the most expensive.
a. supercomputer
b. mainframe
c. desktop
d. laptop
computers cannot work without the action of man.
a. true
b. false
________ is any data and instructions entered into the memory of a computer.
a. input
b. processing
c. information
d. hovering

Explanation:

1. Supercomputers are highly - specialized and powerful computing systems with high - end components and advanced technology, making them the most expensive among the given options. Mainframes are also costly but less so than supercomputers, while desktops and laptops are consumer - level devices with lower costs.
2. Computers can operate autonomously once programmed. For example, servers can run automated tasks, and some software can execute processes without continuous human input.
3. Input refers to data and instructions that are entered into a computer's memory. Processing is what the computer does with the input, information is the result of processing, and hovering is a mouse - related action not related to data/instructions entering memory.

Answer:

1. A. supercomputer
2. B. False
3. A. Input